U3000 on the 2023 Mazda Mazda3
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 15-001-25 | 2025-03-04. Service bulletin. Some vehicle may experience the i-ACTIVSENSE/ALH warning lights on and a system error messages may be found in the center display as well. DTC U3000:04 (FSC) is stored in memory • DTC U3000:04 (FSC) - Forward sensing camera (FSC) internal malfunction • This may be caused by a hardware failure in an internal device of the FSC that results in the malfunction detection. To eliminate this concern, the production process of the FSC has been modified. |
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| 09-001-24g | 2024-10-05. Service bulletin. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:00-TCU (Emergency call unit/telematics communication unit internal malfunction) or U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified. |
| 09-001-24e | 2024-08-02. Service bulletin. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified. |
| 09-001-24d | 2024-07-05. Service bulletin. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified. |
| 09-001-24c | 2024-05-04. Service bulletin. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified. |
| 09-001-24b | 2024-04-03. Service bulletin. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified. |
| 09-001-24a | 2024-03-06. Service bulletin. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified. |
| 09-001-23a | 2024-01-06. Service bulletin. Some vehicles may exhibit an “In Vehicle Network Malfunction” message appearing in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored after the connected service contract has been discontinued. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified |
| SA-027-23c | 2023-12-05. Service bulletin. In-Vehicle Network Malfunction error message and Master Warning light ON with DTC U3000:04 (Telematics communication unit internal malfunction) stored. |
| SA-027-23a | 2023-07-05. Service bulletin. IN-VEHICLE NETWORK MALFUNCTION AND MASTER WARNING LIGHT ON. DTC U3000:04 STORED (DOES NOT APPLY TO 09-001/23) |
12 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.